How does the fixed 100 m parallax on the GPO Spectra 6x 2-12x50i affect performance during outback stalk hunting?

The factory-fixed parallax at 100 m is optimized for typical medium-range hunting distances from close quarters out to roughly 300 to 400 metres. Because it lacks an adjustable side-focus turret, it keeps the profile streamlined and lightweight at 593 g for all-day mobile carry in the bush. However, it is not designed for precision target shooting or extreme long-range engagements beyond 500 metres where adjustable parallax is required.

What battery does the GPO Spectra 6x 2-12x50i illuminated G4i reticle require, and does it comply with Australian electrical standards?

The illuminated G4i reticle is powered by a single standard 3v CR2032 button cell battery, featuring an iControl auto-shutoff that triggers after 3 hours and a low-battery indicator at 15% remaining power. Because it runs entirely on a removable low-voltage battery and does not connect to 230/240V AC mains power, it does not require SAA or RCM electrical safety certifications for use in Australia.

What rings and accessories are recommended to mount and protect the GPO Spectra 6x 2-12x50i?

This riflescope features a 30 mm main tube diameter and requires standard 30 mm scope rings or mounts for attachment to your rifle. To protect your objective lens from glare and harsh outback sun, you can pair it directly with the compatible Gpo Sunshade 50mm designed specifically for GPO 50mm models.

Hunting Riflescope - GPO Spectra 2-12x50i RS651

The GPO Spectra 6x 2-12x50i with the G4i reticle is a low-light hunting riflescope built on a 30 mm main tube. Featuring a 6x optical zoom range from 2x to 12x magnification paired with a 50 mm objective lens, it provides high light gathering and clear edge-to-edge target acquisition across medium-range hunting environments. Operating on a Second Focal Plane (SFP) configuration, this optic balances a lightweight 593 g form factor with 97 mm of eye relief for comfortable positioning on centre-fire bolt-action rifles.

Key Features

Optical Performance: Features DoubleHD glass, GPObright multi-coatings yielding approximately 90% daylight light transmission, and PASSIONdrop hydrophobic outer lens coatings.
iControl™ Illumination: Glass-etched G4i illuminated centre-dot reticle powered by a single 3V CR2032 battery, featuring a 3-hour auto-shutoff and an integrated low-battery warning at 15% remaining capacity.
PASSIONTrac Turrets: Capped, tool-free resettable turrets delivering 0.1 MRAD (1 cm at 100 m) click values with 400 cm of total elevation and windage adjustment range.
Wide Field of View: Delivers a field of view ranging from 21.0 m at 2x down to 3.5 m at 12x at a 100 m distance.

Specifications

Magnification: 2x – 12x
Objective Lens Diameter: 50 mm (outer diameter: 57.2 mm)
Main Tube Diameter: 30 mm
Focal Plane: Second Focal Plane (SFP)
Reticle: G4i illuminated
Eye Relief: 97 mm
Exit Pupil: 9.5 mm to 4.2 mm
Parallax Setting: Fixed at 100 m
Field of View (FOV): 21.0 m – 3.5 m at 100 m
Click Value: 1 cm at 100 m (0.1 MRAD)
Elevation / Windage Travel: 400 cm / 400 cm at 100 m
Dimensions: 336 mm length, 47.9 mm height, 67.5 mm width
Weight: 593 g
Power Source: 1x CR2032 lithium button cell

Who is the GPO Spectra 6x 2-12x50i G4i for?

Dusk and dawn stalk hunters — provides a broad 2x to 12x zoom range and 97 mm eye relief in a mobile 593 g low-light hunting riflescope that stays lightweight for all-day mobile carry across varied terrain.
Stand hunters operating in low-light twilight conditions — utilizes a large 50 mm objective lens and a 9.5 mm exit pupil at low power to gather maximum ambient light while maintaining factory-fixed 100 m parallax simplicity.

Less suitable for: Precision target shooting or long-range shooting beyond 500 metres that requires an adjustable side-focus parallax turret to eliminate optical error at extended distances; shooters in these scenarios are better served by high-magnification riflescopes featuring dedicated side-parallax adjustment.

SKU	GPO40688LP
Model #	RS651
Brand	Gpo
Shipping Weight	1.0000kg

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Gpo Spectra 6x 2-12x50i Riflescope Rs651 G4i Reticle 30mm

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